Where to buy Insulation board by thickness?

You can buy all insulation Board thicknesses right here at Insulation Wholesale. We stock a wide range of insulation boards by thickness, so you do not have to compromise on material depth. Our team understands the importance of clear sizing and reliable stock. Order your preferred insulation thickness Board online for competitive pricing and fast delivery.

What insulation board thicknesses are there?

Insulation boards commonly range from 20mm to 150mm and above. Some brands offer higher thicknesses beyond 150mm, reaching 200mm and thicker for custom orders. In this category, all our boards are grouped by thickness for easy comparison.

What is the thickest insulation board available?

The thickest insulation is 120mm to 200mm and thicker, mainly used in roofs, external walls, and high-performance builds where energy efficiency is a priority. These thicknesses offer significantly higher resistance to heat loss.

Insulation Board By Thickness

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75mm Kingspan Kooltherm K108 Cavity Board Insulation 1200mm x 450mm Pack of 6 (3.24m2)

75mm Kingspan Kooltherm K108 partial fill cavity wall board is a premium performance lower lambda insulation with a rigid thermoset fibre-free phenolic core. It is faced on both sides with a low emissivity composite foil facing and is used in partially filled cavity walls.

£104.32£125.18 Ex VATInc VAT
£32.20£38.64 Per M2 Add to cart
80mm Jablite HP+ 70E External Wall Insulation Board 1200mm x 600mm (4′ X 2′) Pack of 7 (5.04m2)

80mm Jablite HP+ 70E External Wall Insulation Board is designed to enhance thermal efficiency for external walls. It can be bonded or mechanically fixed, providing reliable insulation solution.

£50.95£61.14 Ex VATInc VAT
£10.11£12.13 Per M2 Add to cart
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80mm Kingspan GreenGuard GG300 R Rigid Extruded Polystyrene Insulation Board 1250mm x 600mm Pack of 5 (3.75m2)

80mm Kingspan GreenGuard GG300 is a high performance rigid extruded polystyrene insulation. It is used to insulate inverted roofs, basements, car park decks, and heavy-duty commercial, industrial and cold store flooring offering a thermal conductivities as low as 0.033 W/m·K

£61.55£73.86 Ex VATInc VAT
£16.41£19.69 Per M2 Add to cart
80mm Kingspan Kooltherm K107 Pitched Roof Board 2400mm x 1200mm Pack of 4 (11.52m2)

80mm Kingspan Kooltherm K107 Pitched Roof Board is a premium performance insulation with a fibre-free rigid thermoset phenolic core. It is used to insulate pitched roofs and attic spaces, and has a thermal conductivity of just 0.019 W/m.K across all thicknesses.

£364.77£437.72 Ex VATInc VAT
£31.66£37.99 Per M2 Add to cart
80mm Kingspan Kooltherm K112 Framing Insulation Board 2400mm x 1200mm Pack of 4 (11.52m2)

80mm Kingspan Kooltherm K112 Framing Board is a premium performance insulation with a fibre-free rigid thermoset phenolic core. It is used to insulate timber and steel framing systems with thermal conductivity of just 0.019 W/mK across all thicknesses.

£456.82£548.18 Ex VATInc VAT
£39.65£47.58 Per M2 Add to cart
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80mm Kingspan Thermaroof TR24 Flat Roof PIR Insulation Board 1200mm x 600mm Pack of 6 (4.32m2)

80mm Kingspan Thermaroof TR24 is a high performance insulation with a fibre-free rigid thermoset polyisocyanurate (PIR) core. Kingspan Thermaroof is suitable for flat roofs waterproofed with partially bonded torch applied multi-layer bituminous waterproofing.

£189.02£226.82 Ex VATInc VAT
£43.75£52.50 Per M2 Add to cart
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80mm Kingspan Thermaroof TR26 PIR Insulation Board 2400mm x 1200mm (8′ x 4′) Pack of 4 (11.52m2)

80mm Kingspan TR26 Thermaroof is high-performance insulation that has a fiber-free rigid thermoset polyisocyanurate (PIR) core. Suitable for flat roof application waterproofed with mechanically fixed single-ply waterproofing.

£285.31£342.37 Ex VATInc VAT
£24.77£29.72 Per M2 Add to cart
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80mm Kingspan Thermaroof TR27 PIR Insulation Board 1200mm x 1200mm Pack of 4 (5.76m2)

80mm Kingspan Thermaroof TR27 is a high performance insulation with a fibre-free rigid thermoset polyisocyanurate (PIR) core. It is used to insulate flat roofs waterproofed with fully adhered single-ply, partially bonded built-up felt, mastic asphalt and cold liquid applied waterproofing.

£157.95£189.54 Ex VATInc VAT
£27.42£32.90 Per Sheet Add to cart
80mm Unilin Safe-R SR/PR Pitched Roof Phenolic Insulation Board 2400mm x 1200mm (8′ x 4′) Pallet of 28 (80.64m2)

80mm Unilin Safe-R Pitched Roof SR/PR provides top-tier thermal efficiency for sloped roofs, including ventilated, hybrid, and warm setups, ensuring excellent U-values with minimal impact on living space.

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90mm Jablite HP+ 70E External Wall Insulation Board 1200mm x 600mm (4′ X 2′) Pack of 6 (4.32m2)

90mm Jablite HP+ 70E External Wall Insulation Board is designed to enhance thermal efficiency for external walls. It can be bonded or mechanically fixed, providing reliable insulation solution.

£49.26£59.11 Ex VATInc VAT
£11.40£13.68 Per M2 Add to cart
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90mm Kingspan Kooltherm K103 Insulation Floorboard 2400mm x1200mm Pack of 3 (8.64m2)

90mm Kooltherm K103 is a premium phenolic core floor insulation solution, designed to deliver exceptional performance with solid concrete or suspended timber floors.

£302.81£363.37 Ex VATInc VAT
£35.05£42.06 Per M2 Add to cart
90mm Kingspan Kooltherm K106 Cavity Board Insulation 1200mm x 450mm Pack of 4 (2.16m2)

90mm Kingspan Kooltherm K106 Cavity Board is a premium performance insulation with a fibre-free rigid thermoset phenolic core with a thermal conductivity of just 0.019 W/mK across all thicknesses.

£90.15£108.18 Ex VATInc VAT
£41.74£50.09 Per M2 Add to cart
90mm Kingspan Kooltherm K110 Soffit Board Insulation 2400mm x 1200mm Pack of 3 (8.64m2)

90mm Kingspan Kooltherm K110 Soffit Board Insulation enhances thermal performance in soffit areas with its slim, efficient design. It’s easy to install and improves energy efficiency.

£317.31£380.77 Ex VATInc VAT
£36.73£44.08 Per M2 Add to cart
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90mm Kingspan Thermaroof TR26 PIR Insulation Board 2400mm x 1200mm (8′ x 4′) Pack of 3 (8.64m2)

90mm Kingspan TR26 Thermaroof is high-performance insulation that has a fiber-free rigid thermoset polyisocyanurate (PIR) core. Suitable for flat roof application waterproofed with mechanically fixed single-ply waterproofing.

£249.28£299.14 Ex VATInc VAT
£28.85£34.62 Per M2 Add to cart

75mm Kingspan Kooltherm K108 Cavity Board Insulation 1200mm x 450mm Pack of 6 (3.24m2)

80mm Jablite HP+ 70E External Wall Insulation Board 1200mm x 600mm (4′ X 2′) Pack of 7 (5.04m2)

80mm Kingspan GreenGuard GG300 R Rigid Extruded Polystyrene Insulation Board 1250mm x 600mm Pack of 5 (3.75m2)

80mm Kingspan Kooltherm K107 Pitched Roof Board 2400mm x 1200mm Pack of 4 (11.52m2)

80mm Kingspan Kooltherm K112 Framing Insulation Board 2400mm x 1200mm Pack of 4 (11.52m2)

80mm Kingspan Thermaroof TR24 Flat Roof PIR Insulation Board 1200mm x 600mm Pack of 6 (4.32m2)

80mm Kingspan Thermaroof TR26 PIR Insulation Board 2400mm x 1200mm (8′ x 4′) Pack of 4 (11.52m2)

80mm Kingspan Thermaroof TR27 PIR Insulation Board 1200mm x 1200mm Pack of 4 (5.76m2)

80mm Unilin Safe-R SR/PR Pitched Roof Phenolic Insulation Board 2400mm x 1200mm (8′ x 4′) Pallet of 28 (80.64m2)

90mm Jablite HP+ 70E External Wall Insulation Board 1200mm x 600mm (4′ X 2′) Pack of 6 (4.32m2)

90mm Kingspan Kooltherm K103 Insulation Floorboard 2400mm x1200mm Pack of 3 (8.64m2)

90mm Kingspan Kooltherm K106 Cavity Board Insulation 1200mm x 450mm Pack of 4 (2.16m2)

90mm Kingspan Kooltherm K110 Soffit Board Insulation 2400mm x 1200mm Pack of 3 (8.64m2)

90mm Kingspan Thermaroof TR26 PIR Insulation Board 2400mm x 1200mm (8′ x 4′) Pack of 3 (8.64m2)